No model



No. 752,210. PATBNTED FEB. 16, 1904. .L. P. DISS.

TYPE WRITING MACHINE.

ARPLIOATIOH FILED AUG. 2, 1901.

flXM, JMPJM" H15 ATTORNEY PATENTED FEB. 1 6, 1 904.

L. P. DISS.

TYPE WRITING MACHINE.

APPLIUATION FILED we. 2, 1901.

N0 MODEL.

INVENTQRL A 2 \A/ITNESSES:

145 TTIJRNVEY'H No. 752,210. I PATENTED FEB. 16, 190-4.

- L.;P. mss.

TYPE WRITING MACHINE,

APPLIO-ATIQN FILED AUG. 2, 1901. N0 MODEL. 5 SHEETS-SHEET 5.

FIG. 6.

*Wwwcssza 'NVENTDE 1H5 TTEIRNEY v w: u'cnms PETERS cov. PHOl'Q-UTHQ.wasumcrou. n. c

' ribbon-clip thereon.

UNITED STATES Patented February 16, 1904.

PATENT OFFICE.

LOUIS P. DISS, OF lLION, NEW YORK, ASSIGNOR To wYoKoFF, SEAMANS &BENEDICT, OF ILION, NEW YORK, A CORPORATION OF new YORK.

TYPE-WRITING MACHINE.

. SPECIFICATION forming part of Letters Patent No. 752,210, datedFebruary 16, 1904.

Application filed August 2, 1901. Serial No. 70,617. {No model.) 7

To all whom, it may concern:

Be it known that 1, Lotus P. Dies, a, citizen of the United States, anda resident of Ilion, in the county of Herkimer and State of New York,have invented certain new and useful Improvements in Type-VVritingMachines, of which the following is a specification.

This invention relates to the ribbon-movements of writing-machines; andits main obj cots are to improve the vibrating mechanism, whereby ateach type impression the ribbon is caused to cover and uncover theprintingpoint, and also to provide improved means for causing the ribbonto shift transversely when the platen is shifted from one printing-centsto another.

To these and other ends, which will hereinafter appear, my inventionconsists in certain combinations of devices, features of construction,and arrangements of parts. all as will be hereinafter fully set forth,and particularly pointed out in the concluding claims.

In the accompanying drawings, Figure 1 is a sidev elevation of afront-strike writing-machine embodying my improvements, the severalparts being shown in normal position. Fig. 2'is a plan of the machine,partly in section. Fig. 3 is a front elevation of the ribbon-vibratorand a portion of the carriagefeeding mechanism connected thereto, thenormal position of the parts being shown in full lines and the workingposition in dotted lines.

Fig. 4 is a cross-section of the machine, taken just in front of theribbon-vibrator, but omitting the ribbon-winding mechanism. Fig. 5 is aface View of a spool, showing the mode of attaching the ribbon thereto.Fig. 6 is an edge view of the empty spool, showing the Fig. 7 .is anedge view of Fig. 5. Fig. 8 is a sectional view showing a ribbon endattached to a spool, and Fig. 9 is an enlarged cross-section throughcone 54. In the several views portions are omitted or broken away inorder to give a clearer idea of the mechanism and similar parts aredesignated by similar numerals of reference.

The frame of the machine comprises a base 1, corner-posts 2, and topplate 3. At the rear of the base are fulcrumed levers 4, bearing keys 5and connected by links 6 to typebars 7, which are mounted upon a segment8 and at their forward ends lie upona curved rest 9, each bar carrying aplurality of typefaces 10. The types strike rearwardiy against a platen11, which is journaled in a frame 12, the latter being hinged at 13 toarms 14 of a carriage 15, which runs upon antifrictionballs 16, rollingin a grooved rail 17, set upon the top plate 3. The carriage ispropelled in the usual manner by a spring-drum 18 and strap 19, and itsmovements are controlled by the usual escapement-wheel Z0 and dogs 21,the latter being carried upon a rocker 22, pivoted at 23 in a bracket24, which depends from the top plate. The dog-rocker is pro- 0 5 videdwith a forwardly-directed arm 25, having branches 26, from which issuspended, by means of hooks 27, a universal bar 28, which extendstransversely beneath the key-levers 4, so that at each operation of thelatter the dog-rocker 22 is vibrated and the carriage is advanced aletter-space in the usual manner.

A narrow ribbon 29 is wound upon spools 30, each spool being providedwith a springcatch 31, (Figs. 5 to 8,)which is secured at oneend by ascrew 32 to the spool-core 33, and thence curves around the core, beingpro vided at its free end with serrations or teeth 34 for catching theribbon. The spool-core is notched or grooved transversely at 3,5opposite to said teeth, so that by reason of the spring-pressure theteeth may force the ribbon down into the notch, thus attaching itsecurely to the spool, as at Fig. 8. The free end of the clamp isprovided with a fingerpiece 36, which extends laterally through anaperture 37, formed in one of the spool-flanges, whereby the operator isenabled to lift the teeth 34 out of the notch 35, so as either to insertthe ribbon or to detach it, as at Fig. 5.

The spools are mounted upon horizontal shafts 38, supported at the sidesof the machine in hangers 39 and bearing at their rear ends bevel-gears40, which are adapted to mesh alternately with gears 41, carried by atransverse horizontal driving-shaft 42, the latter being mounted inhangers 43 and carrying a splined bevel-pinion 44 in mesh with a pinion15, rotated by the spring-drum 18 in the usual manner. The ribbon passesup from the spools through slots 46 in the top plate and extends acrossthe machine in front of the platen 11, the central portion of the ribbonbeing arranged on edge or vertically and being threaded between verticalguiding-fingers 4E7, formed upon a vibrating arm 48. It will be observedthat a pair of oppositely-directed fingers is provided upon each side ofthe typeopening 49 and that the ribbon twists from horizontal tovertical position before entering the vibrator. The portions of theribbon at the sides of the vibrator rest upon transversely-arrangedsupporting or guiding plates 50, shaped in conformity with the twist ofthe ribbon and curving downwardly at their ends at 50, so as todeflectthe ribbon down to the spools. Projecting over the deflecting portions50 are upwardly and rearwardly curving guiding-fingers 51, through whichthe ribbon is threaded, whereby it is given a compound twist, thustaking up the slazk along the lower edge of the ribbon which resultsfrom twisting it from horizontal to vertical position. Said fingers aresecured by screws 52 to the plates 50 and the latter by screws 53 to theupper portion of the type-bar segment 8.

Ordinarily in moving or vibrating a ribbon laterally to and away fromthe printing-point one edge of the ribbon is strained more than theother, leaving one edge comparatively taut and the other comparativelyslack, so that the slack side affords no support or resistance to theside which is taut, and the ribbon is apt to become creased in thedirection of its width. This is especially true where one portion of theribbon is twisted at an angle to another portion in its movement fromone spool to another, as in the present structure. This unevenness oftension is due to the fact that one edge of the ribbon is maintained andmoved to agreater distance from its fixed line of support than theother. Thus in the present structure it will be observed upon referenceto Fig. 1 that the edge of the ribbon which is uppermost in the vibratoris farther from the ribbon-spools than the lower edge is and thatordinarily there would be greater strain upon this upper edge than therewould be upon the lower edge. It will be likewise understood that whenthe ribbon-vibrator has moved upwardly this difference in the strain onthe edges is increased, and the liability of the ribbon being creasedwidthwise by the taut edges resisting the lateral movement of the slackedge, is increased. By my present invention, however, this objectionablefeature is obviated, and a substantially equal strain is exerted uponboth edges of the ribbon, or the lower edge thereof has aslightly-increased tension, and the ribbon is maintained taut and freefrom creases, as-will now appear.

At the sides of the opening 19, between the inner guiding-fingers 17,are formed in the body of the ribbon-vibrator, conoidal projections 54,over which the ribbon slips as it feeds through the vibrator, theconoidal projections forming forwardly and downwardly inclinedbearing-surfaces for the ribbon. The lower portions of the projectionshave the greatest swell, thus providing an inclined bearing-surface,which takes up slack to the greatest extent at the lower edge of theribbon, where the most slack ordinarily occurs, and the slope of eachprojection gradually decreases toward its upper end, where it cooperateswith the upper edge of the ribbon, which ordinarily has the greateststrain and the least slack. In other words, the lower edge of the ribbonis caused by the cooperation of the guiding-fingers and the offsetconoidal projections to pursue a tortuous course, whereas the upper edgeruns comparatively straight, so that an increased tension will beexerted upon the lower edge of the ribbon, or a substantially eventension will be exerted upon the ribbon from edge to edge, and theribbon will be maintained fiat and free from creases. The idea might bedifferently expressed by saying that by this feature of my invention asubstantially uniform amount of slack is provided from edge to edge ofthe ribbon at all times or that one side has substantially the sameamount of slack as the other. That edge of the ribbon which ordinarilyhas the objectionable slack and which is the lower edge in the presentinstance may be given a slightly-greater tension than the other or upperedge; but in no case should it have less tension.

The inclination of the conoidal projections affords a means forgradually taking up the slack in the ribbon in an increased amount fromat or near the upper edge thereof to the lower edge, it being understoodthat the slack is given to the ribbon in this way in the particularstructure shown and described.

While I have shown but one device for overcoming the objectionableunevenness of tension of the ribbon and its consequent liability tocrease, I am aware that Various means may be provided for this purposeand without departing from the spirit of my invention, whichcontemplates, broadly, the embodiment of means for taking up anyobjectionable slack in a laterally-vibrating ribbon.

The Vibrator-arm 48 extends from the printing-point toward the left andis then bent downwardly and rearwardly at 55 and again' to the right at56, the latter portion being provided with a hub 57, Figs..1 and 2,which is secured by a set-screw 58 upon a short horizontal rearwardlyextending rock-shaft 59, this shaft being carried upon the upper ends ofa pair of movable arms 60, which are supported by a usually stationaryshaft 61 parallel with and below the shaft 59 and journaled uponpivot-screws 62 in hangers 63. The

vibrator 18 turns about the axis 59 when lifting the ribbon up to coverthe printing-point, and, as will be observed at Fig. 3, said axis isdisposed below and to the left of the printing-point, so that an index64, which is formed upon the vibrator at the left-hand edge of thetype-opening 49, may normally stand just below the point upon which thenext type impression is to fall and so that the vibrator may swingupwardly and to the left, thereby positioning the type-opening 49directly in front of said impression-point, as indicated by dotted linesat Fig. 3.

The rock-shaft 59 is provided at its rear end with a bent operating-arm65, preferably formed integral with the shaftand connected by adrop-link'66 to the left branch 26 of the dog-rocker, so that as saidbranch is depressed at each key-lever stroke thelink 66 is pulled downand by means of the arm rocks the shaft 59, so as to cause the vibratorto swing upwardly and toward the left, thus I covering theprinting-point with the ribbon and enabling the types to strike throughthe opening 49. The lower end of the link 66 is threaded into a hub 67,which is pivoted at 68 in a fork 69, projecting rearwardly from saidbranch 26 and secured thereto by a screw 70, collar 71, and nut 72. Thelink 66 may be screwed into or out of the hub 67, so as to adjust therelation between the dog-roc-ker and the ribbon-Vibrator, and is hookedat its upper end to the bent arms 65. A returningspring 73 for thevibrator is coiled around the shaft 59 between the arms 60. i

A platen-shift key 7 4 is fulcrumed at its rear end at 75 and connectedby a pull-link 76 and arm 77 to a transverse horizontal rock-shaft 78,which is pivoted in hangers 79 and carries at its inner end anupwardlyand rearwardly directed arm 80, the free end whereof is adaptedto bear against a rod 81, mounted upon the lower portion of theplaten-frame 12 and extending longitudinally of the platen. This rod isengageable at all points in its endwise travel by the arm 80 and is alsonearly in line with the rock-shaft 78 and the platenframe hinge 13, sothat when the key 7 at is depressed and causes the rod 7 6 to rock theshaft 78 the arm 80 may throw the rod 81 forwardly, thus shifting theplaten upwardly about the hinge 13, so that the top or outermostcharacters 10 upon the type-bars may print.

In order that the narrow ribbon may shift vertically in unison with thiscase-shift movement of the platen, a rearwardly extending arm 82 isprovided upon the platen shifting rock-shaft 7 8 and connected by adrop-link 83 to a horizontal operating-arm 84, which is adjustably fixedby a set-screw 85 upon the usually stationary rock-shaft 61, whichcarries the supporting arms 60 for the ribbon vi- ,brator. It will beobserved that said arm 8a is secured in an eye formed in a lug 86depending from said shaft 61. When the shaft 78 is rocked for shiftingthe platen, its arm 82 pulls up the link 83 and arm 84, thereby rockingsaid shaft 61 and causing the supporting-arms 60 thereon to swingupwardly and inwardly, as indicatedby dotted lines at Fig. L. By thisaction of the supporting-arms 60 the ribbonvibrator is given a compoundswinging movement, whereby the index 64 is carried upwardly in asubstantially vertical line, so that it may serve its purpose when theplaten is in either lower or upper case position. It will be perceivedthat said compound movement results partly from the bodily movement ofthe axis 59 about the axis 61 and partly from the idle movement of thelink 66 about its lower pivot 68, said link being so proportioned andarranged with reference to the axis 59 and 61 as to secure the desiredupward movement of the vibrator and the index 64 thereon. By shorteningor lengthening the operating-arm 84 the throw of the ribbon-vibrator maybe increased or diminished, as required, and the connected arm 82 may beadjusted accordingly along the platen-shifting rock-shaft 78, beingsecured in its adjusted position by a set-screw 87,'tapped into a hub 88on the arm. hen the several parts are shifted to the dotted-linepositions at Fig. 4, the pointer 64 again stands normally justbeneaththe point where the next impression is to be made upon the paper, and

at the operation of the type-keys the link 66 is caused to swing thevibrator upwardly and toward the left the same as when the parts standnormally at the Fig. 3 position.

In operation by the depression of a key 5 and its levert the link 6 iscaused to swing the type-bar 7 rearwardly to deliver its impression uponthe platen. At the same time the universal bar 28 is carried down and bymeans of hooks 27 and rocker 22 swings the dogs 21 forwardly. By thismovement of the dogrocker the link 66 is pulled down and through thebent arm 65 and shaft 59 swings the vibrator 4:8 upwardly, thus movingthe ribbon edgewise to cover the printing-point. Upon the release of thekey from pressure the typebar and dog-rocker return to normal positionand the carriage feeds in the usual manner under the tension of thespring 18. At the same time the spring 7 3 returns the ribbon-vibratorto normal position beneath the printingpoint. When it is desired toprint a capital letter, the key 74 is depressed and by means of the rod76 rocks the shaft 78 and its arm 80, thereby swinging the platen-frameupon the hinge l3 and lifting the front side of the platen, so that thecapital type-10 may print. At the same time the vibrator-supporting arms60 are moved by the arm 82 and link 83, thus causing the vibrator toshift upwardly. Then the keys 5 are depressed to cause the typeimpression to be made in the described manner, the link 66 beingoperated by the universal bar 28, as before, to cause the elevation ofthe ribbon at each type impression. Upon the relief of the shift-keyfrom prespreferably being caused to twist from a hori zontal to avertical position between said spools and said guiding means; that theribbonguiding fingers 51, arranged between the vibrator and the spools,extend obliquely in such a direction as to produce a compound twist of.

the ribbon between the spools and the vibrator; that the relation of theribbon-guiding fingers' JJ? to the downwardly and forwardly inclinedbearing-surfaces 5a is such as to cause the ribbon to pursue a tortuouscourse through the vibrator, said surfaces being offset forwardly fromsaid fingers for this purpose, whereby the slack in the lower edges ofthe ribbon is taken up and the ribbon prevented from creasing widthwise.It will further be seen that the vibrator at each type impression ismoved diagonally upward and sidewise in a substantially verticalplane,whereby the index 6 carried thereon, is moved out of the path ofthe type and that to this end the vibrator is pivoted at the left of andbelow the printing-point. ceived that the vibrator is pivoted upon amovable support which is operatively connected to the platen-shiftingmeans, so that the platen and vibrator are shifted simultaneously, thusboth enabling the ribbon to cover the printing-point at the operation ofthe keys I for printing capital letters and also enabling the index 6 1to serve its purpose in either of the upper or lower shift positions ofthe platen; that a link 83 connects the pivoted support to theplaten-shifting means, and that a link 66 connects the ribbon-vibratorto a part, as 26, which moves at each type-stroke, the latter linkswinging idly at the'operation of shifting the platen and vibrator; thatthe swinging support 60 for the vibrator extends upwardly and to theleft from its pivot or axis 61, and that the ribbon-vibrator issupported upon pivoted arms, as 60 and 66, and is connected to theplaten-shifting means, said vibrator moving bodily upon said pivotedarms in accordance with the movement of the platen. It will also beobserved that the ribbon is attached to the spool by means of a spring31, fixed at one end to the core and serrated at its free end, a notchbeing formed in the core for cooperation with said serrations to clampthe ribbon, and a finger-piece being formed upon said spring andprojecting through an aperture formed in one of said flanges. 1

Many variations may be made within the scope of the invention, andportions of my improvements may be used without others.

It-will be also per-- What I claim as new, and desire to secure byLetters Patent, is

1. In a front-strike writing-machine, the combination with a platen anda system of types, of a pair of spools arranged at opposite sides of thetype system and having horizontal parallel axes, means at theprintingpoint for guiding the ribbon on edge or vertically andmoving itvertically to cover and uncover the printing-point, means forautomatically moving the vibrator during the printing operation, andguiding-plates 5O arranged between said ribbon-guiding means and saidspools, said plates being shaped substantially in conformity with thetwist of the ribbon.

2. In a front-strike writing-machine, the combination with a platen anda system of types, of a pair of spools arranged at opposite sides of thetype system and having horizontal parallel axes, means at theprintingpoint for guiding the v ribbon on edge or vertically and movingit vertically to cover and uncover the printing-point, means forvibrating the ribbon during the operation of printing, andribbon-guiding fingers 51 arranged between said guiding means and saidspools, said fingers extending obliquely in such a direction as toproduce a compound twist of the ribbon between the spools and theguiding means at the printingpoint.

3. In a front-strike writing-machine, the combination with a series oftypes and a platen, of a ribbon-vibrator arranged forwardly of theplaten and provided with ribbon-guiding fingers and also with downwardlyand forwardly inclined bearing-surfaces for the ribbon and whichextendbeyond the plane of the fingers, the relation of said fingers tosaid bearing-surfaces being such as to cause the ribbon to pursue atortuous course through the vibrator and to take up the slack on oneside or edge of the ribbon.

4. In a front-strike writing-machine, the combination with a series oftypes and a platen, of a ribbon-vibrator arranged forwardly of theplaten and providedwith ribbon-guiding fingers and also with downwardlyand for- Wardly inclined bearing-surfaces for the ribbon, the relationof said fingers to said bearing-surfaces being such as to cause theribbon to pursue a tortuous course through the vibrator, saidbearing-surfaces being arranged between said fingers, and a type-openingbeing provided upon the vibrator between said bearing-surfaces.

5. In a front-strike writing-machine, the combination with a system oftypes and a platen, of a ribbon vibrator arranged forwardly thereof andprovided with a type-opening and also having on each side of thetypeopening oppositely-directed guiding-fingers, and cones 54 projectingforwardly from the face of the vibrator and arranged one upon each sideof the type-opening.

6. In a front-strike writing-machine, the combination with a system oftypes and a platen, of a ribbon-vibrator arranged forwardly thereof andprovided with a type-opening and also having on each side of thetypeopening both upwardly and downwardly directed verticalguidingfingers, and cones projecting forwardly from the face of thevibrator, said upwardly-directed fingers being arranged at the outersides of said cones, and said downwardly-directed fingers being arrangedat the outer sides of said upwardly-directed fingers.

7 In a front-strike writing-machine, the combination with aseri'es oftypes and a platen, of a ribbon-vibrator arranged forwardly of theplaten and provided with ribbon-guiding fingers, and cooperative offsetribbon-guiding devices so arranged with relation to said fingers thatthe ribbon is caused to pursue a tortuous course, whereby the slack onone side or edge of the ribbon is taken up.

8. In a front-strike writing-machine, the combination with a series oftypes and a platen, of a ribbon-vibrator arranged forwardly of theplaten and provided with ribbon-guiding fingers, and cooperativeangularly-offset ribbon-guiding devices placed between said fingers andso arranged with relation to said fingers that the ribbon is caused topursue a tortuous course, whereby the slack on one side or edge of theribbon is taken up.

9. In a front-strike writing-machine, the combination with a series oftypes and a platen, of a ribbon-vibrator arranged forwardly of theplaten and provided with devices for guiding the ribbon on edge past theprinting-point, and cones 54 arranged upon the vibrator between saidguiding devices, said cones forming downwardly and forwardly extendingbearing-surfaces for the ribbon, and causing the latter to pursue atortuous path as it is fed through the vibrator.

10. In a front-strike writing-machine, the combination with a system oftypes and a platen of a ribbon-vibrator arranged forwardly of the platenand provided upon its front face with upwardly-directed ribbonguidingfingers and forwardly-protruding conical ribbon-guiding surfaces betweensaid guiding-fingers. r

11. In a front-strikewriting-machine, the combination with a system oftypes and a platen, of a ribbon-vibrator arranged forwardly of theplaten and provided with outer downwardly-directed guiding-fingers,inner upwardly directed guiding fingers, downwardly and forwardlyinclined bearing-surfaces arranged between said inner guidingfingers,and a type-opening between said inclined bearing-surfaces.

12. In a front-strike writing-machine, the

combination with a system of types and a platen, of a ribbon-vibratorhaving an index standing contiguous to and normally indicating theprintmg-point and arranged forwardly of the platen and means for movingsaid vibrator at each type impression diagonaHy upward and sidewise in asubstantially vertical plane.

13. In a front-strike type-writing machine, the combination with asystem of types and a platen, of a ribbon-vibrator mounted to movediagonally and 'sidewise in a substantially vertical plane and having atype-opening, and a printing-point indicator arranged to one side of thetype-opening, the said indicator standing normally at the printing-pointand the type-opening to one side of and below the printing-point, andmeans for moving said vibrator and causing the type-opening and ribbonto register with the printing-point.

14. In a front-strike writing-machine the combination with a system oftypes and a platen, of a ri )bon-vibrator having an index and atype-opening at the right thereof and also having ribbon-guiding devicesupon each side of said type-opening, said vibrator being pivoted at theleft of and below the printingpoint and vibrating diagonally in asubstantially vertical plane.

15. In a front-strikewriting-machine, the combination with a system ofkeys, a system of types and a platen, of a ribbon-vibrator 18 havingtype-opening 4:9, cones 54 on the sides of said type-opening, bothupwardly and downwardly directed ribbon-guiding fingers 47 on the outersides of said cones, an index 64E at the left of said opening, apivot'59 for said vibrator at the left of and below the printing point,and means connected to the keys for operating said vibrator.

16. In a front-strike writing-machine, the combination with a platen andmeans for shifting the same, of a system of types, a vibrator forcausing the ribbon to cover and uncover the printing-point, a pivotedsupport for said vibrator, a link connecting said pivoted support to theplaten-shifting means, and a link connecting said vibrator to a partwhich moves at each type-stroke. V

17. In a front-strike writing-machine, the combination with a platen andmeans for shifting the same, of a system of types, a vibrator forcausing the ribbon to cover and uncover the printing-point, shaft 59 forsaid vibrator, arms 60 in which said shaft is journaled, shaft '61 uponwhich said arms are carried, adjustable arm 84 mounted upon said shaft61 and connected to said platen-shifting means, arm 65 connected to saidvibrator, and link 66 connecting the arm 65 to a part which moves ateach type-stroke. 7

18. In a front-strike writing-machine, the combination with a platen andmeans for shifting the same, of a system of types, a vibrator forcausing the ribbon to cover and uncover the printing-point, saidvibrator carrying an index 64: and being pivoted below and to one sideof the printing-point, a pivoted support upon which said vibrator ispivoted, said pivoted support being connected to said platenshiftingmeans, and a connection from said vibrator to a part which moves at eachtypestroke, said connection moving idly at the shifting movement of theplaten and ribbonvibrator.

19. In a front-strike writing-machine, the combination with a system oftypes, a platen, and means for shifting the platen,of a vibrator forcausing the ribbon to cover and uncover the printing-point, saidvibrator being pivotedbelow and to the left of the printingpoint andcarrying an index 64, a swinging support for said vibrator, said supportextending upwardly and to the left of its pivot and being connected tosaid platen-shifting means, and a link 66 connecting an arm of saidvibrator to a part which moves at each type-stroke.

20. In a front-strike writing-machine, the combination with a system oftypes and a platen, of a vibrator &8 having a type-opening 49 anddevices for holding the ribbon,shaft 59 upon which said vibrator ismounted, arms 60 upon which said shaft is carried, shaft 61 upon whichsaid arms 60 are mounted, arm 84 secured to the shaft 61, link 83connecting said arm 84: to arm 82 secured upon a platenshifting shaft 78, arm 65 provided upon shaft 59, and link 66 connecting the arm 65 to apart that moves at each type-stroke.

21. In a type-writing machine, the combination with a system of typesand a platen, of means for shifting the platen, aribbon-vibratorprovided with an index, means for shifting said vibratorand index together with said platen, and means for moving said Vibratorand index upwardly and laterally to cause the ribbon to cover and theprinting-point at either shift position of the platen.

22. In a front-strike writing-machine, the combination with a system ofkeys, a system of types and a platen, of means for shifting the platen,a ribbon-vibrator arranged forwardly thereof and provided with an indexarranged normally contiguous to and registering with the printing-point,a movable device upon which said vibrator is pivoted, means connected tosaid movable device for causing the vibrator and index to shift with theplaten, and means connected with the keys for causing the vibrator tocover the printing-point with the ribbon.

23. In a front-strike writing-machine, the combination with a system oftypes and a platen, of means for shifting the platen, and aribbon-vibrator connected to the keys, said ribbon-vibrator beingsupported upon pivoted arms, as 60 and 66, and being connected to theplaten-shifting means, the construction and arrangement being such thatat the platenshifting operation said vibrator is moved bod ily upon saidpivoted arms in accordance with the movement of the platen.

24. In a ribbon-spool for type-writing machines, the combination with acore and flanges, of a spring 31 fixed at one end to the core andserrated at its free end, a notch in the core for cooperation with saidserrations to clamp the ribbon, and a finger-piece integral with saidspring and projecting through and adapted to move toward and away fromthe core of the spool in an aperture formed in one of said flanges.

25. In a ribbon-spool for type-writing machines the combination with acore and flanges, of spring 31 fixed at one end and curving thencearound the core and serrated at its free end, and a finger-piece carriedby said spring and projecting through an aperture formed in one of saidflanges, and adapted to move in unison with said spring, so that it maybe employed to move the free end of the spring toward and away from thecore of the spool.

26. In a type-writing machine, the combination of means for vibrating aribbon laterally and means for taking up the slack in one edge or sideof the ribbon in order to prevent the ribbon from creasing during itslateral vibration by the vibrating means.

27. In a type-writing machine, the combination of means for vibratingthe ribbon laterally and means for taking up the slack in the ribbon todifferent extents from one edge or side thereof to the other in order totake up any objectionable slack when the ribbon is vibrated laterally bythe vibrating means.

28. In a type-writing machine, the combination of ribbon-spools, avibrator which vibrates the ribbon laterally and means for pro viding asubstantial uniform tension upon said ribbon from edge to edge thereofduring the vibration of said ribbon-vibrator.

29. In a type-writing machine, the combination of ribbon-spools, avibrator which vibrates the ribbon laterally and meansfor assuringsubstantially uniform amount of slack in said ribbon from edge to edgethereof during the vibration of said ribbon-vibrator.

30. In a type-writing machine, the combination of a ribbon-vibrator,means for operating said vibrator and means carried by said vibrator fortaking up an objectionable slack on one side of the ribbon in order toprevent a widthwise creasing of said ribbon.

31. In a type-writing machine, the combination of a ribbon-vibrator,means for operating said vibrator and means carried by said vibrator fortaking up an objectionable slack to a gradually-increasing extent fromone side to the other of the ribbon in order to prevent a widthwisecreasing of said ribbon.

32. In a type-writing machine, the combination of a ribbon-vibrator,means for operating said vibrator and conoidal ribbon-bearingprojectionscarried bysaid vibrator for taking up an objectionable slackto agradually-increasing extent from one side to the other of the ribbonin order to prevent a widthwise creating of said ribbon.

33. In a type-Writing machine, the combination of ribbon-spools, aribbon, means for maintaining said ribbon twisted in the movementthereof from spool to spool, and means forvtaking up the slack producedby said twist in one edge portion of the ribbon.

34:. In a type-Writing machine, the combination of ribbon-spools, aribbon, means for maintaining said ribbon twisted in the movementthereof from spool to spool and means for taking up the slack to agradually-increasing extent from one edge to the other of the ribbon.

Signed at Ilion, in the county of Herkimer and State of New York, this18th day of July, 9

